https://biblioteca.uaysen.cl/cgi-bin/koha/opac-search.pl?q=ccl=%28su%3A%22Drug%20addiction%22%29%20AND%20%28su%3A%22Colombia.%22%29&format=rss2 2 0 50 ISBN https://biblioteca.uaysen.cl/cgi-bin/koha/opac-detail.pl?biblionumber=269861 By Tapias Hernández, César Augusto,. . 1 online resource : , Originally presented as the author's thesis (master's)--Universidad Nacional de Colombia-Sede Bogotá, 2008.

]]> https://biblioteca.uaysen.cl/cgi-bin/koha/opac-detail.pl?biblionumber=269861 ISBN https://biblioteca.uaysen.cl/cgi-bin/koha/opac-detail.pl?biblionumber=312984 By Tapias Hernández, César Augusto,. . 1 online resource : , Originally presented as the author's thesis (master's)--Universidad Nacional de Colombia-Sede Bogotá, 2008.

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